Kvm Switch and Remote System

1. A KVM switch which is connected between a plurality of servers, and a client to which a keyboard, a mouse, a display, and a speaker are connected, and switches a server connected to the client, the KVM switch comprising: a sound input portion that inputs sound data emitted from each server and sound from surroundings of each server; a sound processing portion that cancels the sound from the surroundings from the input sound data; an abnormal sound determination portion that determines whether the input sound data is an abnormal sound; and a notification portion that notifies the client of abnormality detection when it is determined that the input sound data is the abnormal sound.

2. The KVM switch as claimed in claim 1 , further comprising a setting portion that sets a method of notifying the client of the abnormality detection for each server, wherein the notification portion notifies the client of abnormality detection depending on the method set by the setting portion.

3. The KVM switch as claimed in claim 2 , wherein the setting portion sets any one of not notifying the client of the abnormality detection, notifying the client of the sound data, and notifying the client of sound data showing a server emitting the abnormal sound.

4. The KVM switch as claimed in claim 1 , further comprising: a storing portion that associates a first flag showing whether the sound data is the abnormal sound, a second flag showing whether the sound data is sound data in which the client is not notified of the abnormality detection, and date-and-time data showing reception date and time of the abnormal sound with the sound data, and stores the sound data associated with the first flag, the second flag, and the date-and-time data; an unnotification determination portion that determines whether there is sound data of the abnormal sound in which the client is not notified of the abnormality detection, based on the first flag and the second flag; and a date-and-time data notification portion that notifies the client of the date-and-time data associated with the sound data when it is determined that there is the sound data of the abnormal sound in which the client is not notified of the abnormality detection.

5. The KVM switch as claimed in claim 1 , wherein the KVM switch is connected to the client via a network and an IP-PBX device, and includes a phone conversation portion that is capable of executing IP-phone conversation with the client.

6. The KVM switch as claimed in claim 1 , further comprising an ultrasonic generation portion that generates an ultrasonic wave.

7. The KVM switch as claimed in claim 2 , further comprising: a storing portion that associates a first flag showing whether the sound data is the abnormal sound, a second flag showing whether the sound data is sound data in which the client is not notified of the abnormality detection, and date-and-time data showing reception date and time of the abnormal sound with the sound data, and stores the sound data associated with the first flag, the second flag, and the date-and-time data; an unnotification determination portion that determines whether there is sound data of the abnormal sound in which the client is not notified of the abnormality detection, based on the first flag and the second flag; and a date-and-time data notification portion that notifies the client of the date-and-time data associated with the sound data when it is determined that there is the sound data of the abnormal sound in which the client is not notified of the abnormality detection.

8. The KVM switch as claimed in claim 2 , wherein the KVM switch is connected to the client via a network and an IP-PBX device, and includes a phone conversation portion that is capable of executing IP-phone conversation with the client.

9. The KVM switch as claimed in claim 2 , further comprising an ultrasonic generation portion that generates an ultrasonic wave.

10. A remote system comprising a plurality of servers, a client to which a keyboard, a mouse, a display, and a speaker are connected, and a KVM switch selectively connecting one of the servers to the client, the KVM switch including: a sound input portion that inputs sound data emitted from each server and sound from surroundings of each server; a sound processing portion that cancels the sound from the surroundings from the input sound data; an abnormal sound determination portion that determines whether the input sound data is an abnormal sound; and a notification portion that notifies the client of the sound data of the abnormal sound, or sound data showing a server emitting the abnormal sound, and the client including a first output portion that receives from the KVM switch and outputs the sound data of the abnormal sound, or the sound data showing the server emitting the abnormal sound.

11. The remote system as claimed in claim 10 , wherein the KVM switch further includes a storing portion that associates a first flag showing whether the sound data is the abnormal sound, a second flag showing whether the sound data is sound data in which the client is not notified of abnormality detection, and date-and-time data showing reception date and time of the abnormal sound with the sound data, and stores the sound data associated with the first flag, the second flag, and the date-and-time data, an unnotification determination portion that determines whether there is sound data of the abnormal sound in which the client is not notified of the abnormality detection, based on the first flag and the second flag, and a date-and-time data notification portion that notifies the client of the date-and-time data associated with the sound data when it is determined that there is the sound data of the abnormal sound in which the client is not notified of the abnormality detection.

12. The remote system as claimed in claim 11 , wherein the client further includes a determination portion that determines whether the date-and-time data is received from the KVM switch, and a second output portion that outputs information showing that the abnormal sound has been detected, and the date-and-time data to the display when it is determined that the date-and-time data is received from the KVM switch.

13. The remote system as claimed in claim 10 , wherein the KVM switch and the client are connected to each other via a network and an IP-PBX device, and each of the KVM switch and the client include a phone conversation portion that is capable of executing IP-phone conversation.

14. The remote system as claimed in claim 10 , wherein the KVM switch further includes an ultrasonic generation portion that generates an ultrasonic wave.

15. The remote system as claimed in claim 11 , wherein the KVM switch and the client are connected to each other via a network and an IP-PBX device, and each of the KVM switch and the client include a phone conversation portion that is capable of executing IP-phone conversation.

16. The remote system as claimed in claim 11 , wherein the KVM switch further includes an ultrasonic generation portion that generates an ultrasonic wave.